Although technically not part of 802.11ac, these new MCS indices are expected to become official in the 802.11ax standard (~2019), the successor to 802.11ac. Several companies are currently offering 802.11ac chipsets with higher modulation rates: MCS-10 and MCS-11 (1024-QAM), supported by Quantenna and Broadcom. Data rates and speed Modulation and coding schemes Wave 2 also supports a higher number of connected devices. Wave 2 can therefore achieve 1 Gbit/s even if the real world throughput turns out to be only 50% of the theoretical rate. The maximum physical layer theoretical rate for Wave 1 is 1.3 Gbit/s, while Wave 2 can reach 2.34 Gbit/s. Wave 2, referring to products introduced in 2016, offers a higher throughput than legacy Wave 1 products, those introduced starting in 2013. Three-antenna AP, three-antenna STA, 80 MHzįour-antenna AP, four one-antenna STAs, 160 MHzĮight-antenna AP, four 2-antenna STAs, 160 MHz With storage locally attached through USB 2.0, filling the bandwidth made available by 802.11ac was not easily accomplished. With the inclusion of USB 3.0 interface, 802.11ac access points and routers can use locally attached storage to provide various services that fully utilize their WLAN capacities, such as video streaming, FTP servers, and personal cloud services. The single-link and multi-station enhancements supported by 802.11ac enable several new WLAN usage scenarios, such as simultaneous streaming of HD video to multiple clients throughout the home, rapid synchronization and backup of large data files, wireless display, large campus/auditorium deployments, and manufacturing floor automation. 80+80 MHz channel bonding (discontiguous 80+80).160 MHz channel bandwidths (contiguous 80+80).Borrowed from the 802.11n specification:.Newly introduced by the 802.11ac specification:.Borrowed from the 802.11a/ 802.11g specifications:.The first three fields in the header are readable by legacy devices to allow coexistence Adds four new fields to the PPDU header identifying the frame as a very high throughput (VHT) frame as opposed to 802.11n's high throughput (HT) or earlier.Coexistence mechanisms for 20, 40, 80, and 160 MHz channels, 11ac and 11a/n devices.
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Optional 160 MHz and mandatory 80 MHz channel bandwidth for stations cf.New technologies introduced with 802.11ac include the following: 6.1 Commercial routers and access points.It meant Wave 2 products would have higher bandwidth and capacity than Wave 1 products. Subsequently in 2016, Wi-Fi Alliance introduced the Wave 2 certification, which includes additional features like MU-MIMO (down-link only), 160 MHz channel width support, support for more 5 GHz channels, and four spatial streams (with four antennas compared to three in Wave 1 and 802.11n, and eight in IEEE's 802.11ax specification). From mid-2013, the alliance started certifying Wave 1 802.11ac products shipped by manufacturers, based on the IEEE 802.11ac Draft 3.0 (the IEEE standard was not finalized until later that year). The Wi-Fi Alliance separated the introduction of ac wireless products into two phases ("waves"), named "Wave 1" and "Wave 2".
This is accomplished by extending the air-interface concepts embraced by 802.11n: wider RF bandwidth (up to 160 MHz), more MIMO spatial streams (up to eight), downlink multi-user MIMO (up to four clients), and high-density modulation (up to 256-QAM). The specification has multi-station throughput of at least 1.1 gigabit per second (1.1 Gbit/s) and single-link throughput of at least 500 megabits per second (0.5 Gbit/s). The standard has been retroactively labelled as Wi-Fi 5 by Wi-Fi Alliance. IEEE 802.11ac-2013 or 802.11ac is a wireless networking standard in the IEEE 802.11 set of protocols (which is part of the Wi-Fi networking family), providing high-throughput wireless local area networks (WLANs) on the 5 GHz band. *: (Wi-Fi 0, 1, 2, 3, are unbranded common usage. Wireless networking standard in the 802.11 family Wi-Fi Generations